http://api.tweetmeme.com/imagebutton.gif?url=http://espn.go.com/los-angeles/nba/story/_/id/8160453/los-angeles-clippers-blake-griffin-injures-knee-team-usa-camp-source-says (http://api.tweetmeme.com/share?url=http://espn.go.com/los-angeles/nba/story/_/id/8160453/los-angeles-clippers-blake-griffin-injures-knee-team-usa-camp-source-says&service=bit.ly&source=espn)Los Angeles Clippers forward Blake Griffin injured his knee during a scrimmage at Team USA training camp and is returning to Los Angeles to be examined by the Clippers' doctors, Yahoo! Sports reported.